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In 1869, John Wesley Powell led nine men and four boats on the first documented descent through the Grand Canyon. As is made clear in this excerpt from 'The Promise of the Grand Canyon,' it was a hell of a challenge.
In 1869, John Wesley Powell led nine men and four boats on the first documented descent through the Grand Canyon. As is made clear in this excerpt from 'The Promise of the Grand Canyon,' it was a hell of a challenge.